turnip: Move device enumeration and feature discovery to tu_drm.c

[mesa.git] / src / freedreno / vulkan / tu_drm.c

diff --git a/src/freedreno/vulkan/tu_drm.c b/src/freedreno/vulkan/tu_drm.c
index f886c875088a14a9cb6d62a08d0ec73db987cd27..c8f10566f0e69aa84e89ec383574ac9f7907a666 100644 (file)
--- a/src/freedreno/vulkan/tu_drm.c
+++ b/src/freedreno/vulkan/tu_drm.c
@@ -55,7 +55,7 @@ tu_drm_get_param(const struct tu_physical_device *dev,
    return 0;
 }
 
-int
+static int
 tu_drm_get_gpu_id(const struct tu_physical_device *dev, uint32_t *id)
 {
    uint64_t value;
@@ -67,7 +67,7 @@ tu_drm_get_gpu_id(const struct tu_physical_device *dev, uint32_t *id)
    return 0;
 }
 
-int
+static int
 tu_drm_get_gmem_size(const struct tu_physical_device *dev, uint32_t *size)
 {
    uint64_t value;
@@ -79,7 +79,7 @@ tu_drm_get_gmem_size(const struct tu_physical_device *dev, uint32_t *size)
    return 0;
 }
 
-int
+static int
 tu_drm_get_gmem_base(const struct tu_physical_device *dev, uint64_t *base)
 {
    return tu_drm_get_param(dev, MSM_PARAM_GMEM_BASE, base);
@@ -204,3 +204,149 @@ tu_gem_info_iova(const struct tu_device *dev, uint32_t gem_handle)
 {
    return tu_gem_info(dev, gem_handle, MSM_INFO_GET_IOVA);
 }
+
+static VkResult
+tu_drm_device_init(struct tu_physical_device *device,
+                   struct tu_instance *instance,
+                   drmDevicePtr drm_device)
+{
+   const char *path = drm_device->nodes[DRM_NODE_RENDER];
+   VkResult result = VK_SUCCESS;
+   drmVersionPtr version;
+   int fd;
+   int master_fd = -1;
+
+   fd = open(path, O_RDWR | O_CLOEXEC);
+   if (fd < 0) {
+      return vk_errorf(instance, VK_ERROR_INCOMPATIBLE_DRIVER,
+                       "failed to open device %s", path);
+   }
+
+   /* Version 1.3 added MSM_INFO_IOVA. */
+   const int min_version_major = 1;
+   const int min_version_minor = 3;
+
+   version = drmGetVersion(fd);
+   if (!version) {
+      close(fd);
+      return vk_errorf(instance, VK_ERROR_INCOMPATIBLE_DRIVER,
+                       "failed to query kernel driver version for device %s",
+                       path);
+   }
+
+   if (strcmp(version->name, "msm")) {
+      drmFreeVersion(version);
+      close(fd);
+      return vk_errorf(instance, VK_ERROR_INCOMPATIBLE_DRIVER,
+                       "device %s does not use the msm kernel driver", path);
+   }
+
+   if (version->version_major != min_version_major ||
+       version->version_minor < min_version_minor) {
+      result = vk_errorf(instance, VK_ERROR_INCOMPATIBLE_DRIVER,
+                         "kernel driver for device %s has version %d.%d, "
+                         "but Vulkan requires version >= %d.%d",
+                         path, version->version_major, version->version_minor,
+                         min_version_major, min_version_minor);
+      drmFreeVersion(version);
+      close(fd);
+      return result;
+   }
+
+   device->msm_major_version = version->version_major;
+   device->msm_minor_version = version->version_minor;
+
+   drmFreeVersion(version);
+
+   if (instance->debug_flags & TU_DEBUG_STARTUP)
+      tu_logi("Found compatible device '%s'.", path);
+
+   vk_object_base_init(NULL, &device->base, VK_OBJECT_TYPE_PHYSICAL_DEVICE);
+   device->instance = instance;
+   assert(strlen(path) < ARRAY_SIZE(device->path));
+   strncpy(device->path, path, ARRAY_SIZE(device->path));
+
+   if (instance->enabled_extensions.KHR_display) {
+      master_fd =
+         open(drm_device->nodes[DRM_NODE_PRIMARY], O_RDWR | O_CLOEXEC);
+      if (master_fd >= 0) {
+         /* TODO: free master_fd is accel is not working? */
+      }
+   }
+
+   device->master_fd = master_fd;
+   device->local_fd = fd;
+
+   if (tu_drm_get_gpu_id(device, &device->gpu_id)) {
+      if (instance->debug_flags & TU_DEBUG_STARTUP)
+         tu_logi("Could not query the GPU ID");
+      result = vk_errorf(instance, VK_ERROR_INITIALIZATION_FAILED,
+                         "could not get GPU ID");
+      goto fail;
+   }
+
+   if (tu_drm_get_gmem_size(device, &device->gmem_size)) {
+      if (instance->debug_flags & TU_DEBUG_STARTUP)
+         tu_logi("Could not query the GMEM size");
+      result = vk_errorf(instance, VK_ERROR_INITIALIZATION_FAILED,
+                         "could not get GMEM size");
+      goto fail;
+   }
+
+   if (tu_drm_get_gmem_base(device, &device->gmem_base)) {
+      if (instance->debug_flags & TU_DEBUG_STARTUP)
+         tu_logi("Could not query the GMEM size");
+      result = vk_errorf(instance, VK_ERROR_INITIALIZATION_FAILED,
+                         "could not get GMEM size");
+      goto fail;
+   }
+
+   return tu_physical_device_init(device, instance);
+
+fail:
+   close(fd);
+   if (master_fd != -1)
+      close(master_fd);
+   return result;
+}
+
+VkResult
+tu_enumerate_devices(struct tu_instance *instance)
+{
+   /* TODO: Check for more devices ? */
+   drmDevicePtr devices[8];
+   VkResult result = VK_ERROR_INCOMPATIBLE_DRIVER;
+   int max_devices;
+
+   instance->physical_device_count = 0;
+
+   max_devices = drmGetDevices2(0, devices, ARRAY_SIZE(devices));
+
+   if (instance->debug_flags & TU_DEBUG_STARTUP) {
+      if (max_devices < 0)
+         tu_logi("drmGetDevices2 returned error: %s\n", strerror(max_devices));
+      else
+         tu_logi("Found %d drm nodes", max_devices);
+   }
+
+   if (max_devices < 1)
+      return vk_error(instance, VK_ERROR_INCOMPATIBLE_DRIVER);
+
+   for (unsigned i = 0; i < (unsigned) max_devices; i++) {
+      if (devices[i]->available_nodes & 1 << DRM_NODE_RENDER &&
+          devices[i]->bustype == DRM_BUS_PLATFORM) {
+
+         result = tu_drm_device_init(
+            instance->physical_devices + instance->physical_device_count,
+            instance, devices[i]);
+         if (result == VK_SUCCESS)
+            ++instance->physical_device_count;
+         else if (result != VK_ERROR_INCOMPATIBLE_DRIVER)
+            break;
+      }
+   }
+   drmFreeDevices(devices, max_devices);
+
+   return result;
+}
+